Here’s how to make sure your Notability files and Pix/Videos are backed up.
Notability
Open Google Drive. Look for for the folder “Notability” – nose around to see if that last thing you created is there. If so, things are working.
OR In Notability, create a new note. Scrawl something on there, then exit the note. Look at the bottom left corner – you should see the “Backing Up” circle go. If so, then things are backing up.
If things are NOT working, then call up settings [the Gear icon, bottom left], select AutoBackup. Login to Google Drive. The defaults [/Notability folder, PDF format] work well.
Pix & Vids to Drive
Open up Drive App
Click the “hamburger menu” – the 3 stacked lines, top left
Select Settings–> Photos
Turn “Google Photos Folder” AND “Auto Backup” ON. The WiFi/Cellular settings don’t matter since your iPad does NOT have a cell radio.
You should see a “Google Photos” folder – all of your pix and videos will be there after they finish uploading.
NOTE: Deleting a photo/video on your iPad DOES NOT delete them from Drive.